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Note 5 - Share Based Compensation (Tables)
9 Months Ended
Sep. 30, 2024
Notes Tables  
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]
  

Three Months Ended September 30,

 
  

2024

  

2023

 
         

Selling, general and administrative

 $53,117  $56,414 

Research, development and engineering

  12,936   48,758 
  $66,053  $105,172 
  

Nine Months Ended September 30,

 
  

2024

  

2023

 
         

Selling, general and administrative

 $140,142  $171,833 

Research, development and engineering

  31,475   48,758 
  $171,617  $220,591